理论上，理论和实践之间没有区别。但实际上，是有区别的。
In theory, there is no difference between theory and practice. But, in practice, there is.
Success in furniture manufacturing comes from understanding both craftsmanship and the customer’s needs.
The key to sustainable agriculture is innovation and respect for nature.
电子并非一个简单不可分割的实体，而是一个复杂系统，其行为只能通过量子力学定律来理解。